1Department of Medicine, Western University, London, ON, Canada
2Dept of Medicine, University of Toronto, Toronto, ON, Canada
3Bone Research and Education Centre, Oakville, ON, Canada
4Division of Endocrinology and Metabolism, McMaster University, Hamilton, ON, Canada
5Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
6National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD, USA
7Endocrine Unit, Massachusetts General Hospital and Harvard Medical School, Boston, MA, USA
8Clinic of Gastroenterology, Gastrointestinal Oncology and Endocrinology, University Medical Center Goettingen, Goettingen, Germany
9MVZ Endokrinologikum Goettingen, Goettingen, Germany
10Unit of Endocrinology and Diabetes, Campus Bio-Medico University of Rome, Rome, Italy
11Department of Medicine, Sengkang General Hospital, Singhealth and Duke-NUS Medical School, Singapore, Singapore
12University of Chicago, Chicago, IL, USA
13Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
14Department of Health Research Methods, Evidence and Impact, McMaster University, Hamilton, ON, Canada
15Dept of Endocrinology and Internal Medicine, Aarhus University hospital, Aarhus, Denmark